CN117204926A

CN117204926A - Implant head, implantation device of flexible electrode and implantation system

Info

Publication number: CN117204926A
Application number: CN202311087293.7A
Authority: CN
Inventors: 张世强; 夏秋伟
Original assignee: Shanghai Ladder Medical Technology Co ltd
Current assignee: Shanghai Ladder Medical Technology Co ltd
Priority date: 2023-08-25
Filing date: 2023-08-25
Publication date: 2023-12-12

Abstract

An implant head, an implant device for a flexible electrode, and an implant system, the implant head comprising: an implantation needle for forming a physical connection with the flexible electrode; the guiding component is used for guiding the movement of the implantation needle and comprises a guiding tube sleeved on the implantation needle, the tail end of the guiding tube is a tip, and the tail end of the guiding tube is close to one end of the implantation object. By adopting the scheme, the straightness of the implantation needle and the stability of the implantation process can be improved.

Description

Implant head, implantation device of flexible electrode and implantation system

Technical Field

The invention relates to the field of brain-computer interfaces, in particular to an implantation device and an implantation system for an implantation head and a flexible electrode.

Background

The brain-computer interface technology can bring subversive progress and innovation to the fields of human medicine, health, life and the like, and is currently being developed and gradually perfected by domestic and foreign scientific researches and commercial institutions.

The implantation device of the flexible electrode is used as an important device in the field of brain-computer interfaces, and the flexible electrode can be implanted into the brain. In order to reduce damage to brain tissue of an implantation object, ensure small deviation between an actual implantation point and a preset implantation point and have high requirement on straightness in the implantation process. Particularly when the region in which the flexible electrode is implanted is a deep brain, the implantation depth of the deep brain is generally greater than 3 cm, which has higher requirements on the movement stroke, stability, straightness and the like of the implanted device. The existing implantation devices can not meet the requirements of movement stroke, stability and straightness.

Disclosure of Invention

The invention solves the technical problem that the prior implantation device can not meet the requirements of movement stroke, stability and straightness.

In order to solve the above technical problems, an embodiment of the present invention provides an implant head, including: an implantation needle for forming a physical connection with the flexible electrode; the guiding component is used for guiding the movement of the implantation needle and comprises a guiding tube sleeved on the implantation needle, the tail end of the guiding tube is a tip, and the tail end of the guiding tube is close to one end of the implantation object.

Optionally, the distal end of the guide tube near the tip has a cut-out exposing a portion of the surface of the implant needle.

Optionally, the tip includes a bevel having a bevel angle ranging from 20 degrees to 50 degrees.

Optionally, the guiding assembly further comprises: the sleeve assembly is connected with the guide pipe at one end and is provided with an accommodating cavity; and one end of the sliding part is connected with the implantation needle, the other end of the sliding part is used for being connected with a driving mechanism, and the sliding part moves in the accommodating cavity under the driving of the driving mechanism so as to drive the implantation needle to move.

Optionally, along the direction of motion of sliding part in the holding cavity, the sliding part has relative first end and the second end that sets up, first end is provided with and is used for connecting the implantation needle mounting hole of implantation needle, the second end is provided with and is used for connecting actuating mechanism's holding recess, wherein, first end is close to implantation needle.

Optionally, the sleeve assembly includes: the accommodating cavity is arranged on the sleeve; and the mounting part is connected with the guide pipe and the sleeve and used for connecting the guide pipe with the sleeve.

Optionally, the flexible electrode is integrated in a flexible electrode assembly, the flexible electrode assembly further includes a flexible electrode sheet connected to the flexible electrode, and the implantation head further includes: the first mounting seat is connected to the sleeve and used for mounting the flexible electrode slice.

The embodiment of the invention also provides an implantation device of the flexible electrode, which is used for driving any implantation head to perform flexible electrode implantation, and comprises: a drive mechanism, comprising: the driving part is used for driving the transmission assembly to linearly move; the transmission switching mechanism is connected with the transmission assembly and is used for connecting the guide assembly of the implantation head; when the transmission switching mechanism and the transmission assembly are in a locking state, the transmission assembly is in a first transmission state, and the transmission assembly drives the implantation needle and the guide tube to integrally move towards an implantation object; when the locking between the transmission switching mechanism and the transmission assembly is released, the transmission assembly is in a second transmission state, and the transmission assembly drives the implantation needle to move relative to the guide tube until the implantation stroke reaches a set stroke.

Optionally, the driving mechanism further comprises a base, and the base is used for installing the driving assembly and the transmission switching mechanism.

Optionally, the transmission assembly includes: the transmission part is connected with the driving part; the first transmission rod is connected with the transmission part and is connected with the guide assembly through the transmission switching mechanism; when the transmission assembly is in the first transmission state, the transmission switching mechanism can move relative to the base, the first transmission rod and the transmission switching mechanism are in a locking state, when the transmission assembly is in the second transmission state, the transmission switching mechanism and the base are in a locking state, and the first transmission rod and the transmission switching mechanism are unlocked and can slide relative to the transmission switching mechanism.

Optionally, the transmission assembly includes: the transmission part is connected with the driving part; the first transmission rod is connected with the transmission part and is connected with the guide assembly through the transmission switching mechanism; the second transmission rod is connected with the transmission part and the transmission switching mechanism, and the axial direction of the second transmission rod is parallel to the axial direction of the first transmission rod and parallel to the linear motion direction of the transmission assembly; when the transmission assembly is in the first transmission state, the transmission switching mechanism can move relative to the base, and the second transmission rod and the transmission switching mechanism are in a locking state; when the transmission assembly is in the second transmission state, the transmission switching mechanism and the base are in a locking state, and the second transmission rod and the transmission switching mechanism are unlocked and can slide relative to the transmission switching mechanism.

Optionally, the transmission switching mechanism includes: the first sliding block is connected to the base; the first locking piece locks the second transmission rod and the first sliding block when the transmission assembly is in the first transmission state, and unlocks the second transmission rod and the first sliding block when the transmission assembly is in the second transmission state; the second locking piece is used for unlocking the first sliding block and the base when the transmission assembly is in the first transmission state, and locking the first sliding block and the base when the transmission assembly is in the second transmission state.

Optionally, the implantation device of the flexible electrode further includes a connecting piece, configured to connect the first slider to the base, where an axial direction of the connecting piece is parallel to a direction of the linear motion of the transmission assembly, and in the first transmission state of the transmission assembly, the first slider moves toward the implantation object along the axial direction of the connecting piece.

Optionally, the implantation device of the flexible electrode further includes a clamping portion disposed on the first slider, where the clamping portion is configured to clamp the sleeve in the guide assembly, so as to connect the guide assembly to the first slider.

Optionally, the clamping portion includes a plurality of clamping segments and locking portion, and a plurality of clamping segments form the clamping space, locking portion is used for tightening up a plurality of clamping segments in order to press from both sides the sleeve that is located in the clamping space.

Optionally, the transmission part includes: the screw rod is arranged on the base, and the axial direction of the screw rod is parallel to the linear motion direction of the transmission part; the second sliding block is sleeved on the screw rod and connected with the first transmission rod and the second transmission rod; the third sliding block is fixedly connected with the second sliding block; the guide rail is fixedly connected to the base, the extending direction of the guide rail is parallel to the axial direction of the screw rod, is matched with the third sliding block and is used for guiding the movement direction of the third sliding block.

Optionally, the driving part comprises a driving knob or a driving motor for driving the screw rod to rotate.

Optionally, the flexible electrode is integrated in a flexible electrode assembly, and the implantation device further comprises: the sliding rod is connected to the base; the second mounting seat is connected with the sliding rod in a sliding mode and used for mounting an electrode plate, and the electrode plate is connected with the flexible electrode assembly and used for receiving signals collected by the flexible electrode assembly.

Optionally, the implantation depth of the implantation device of the flexible electrode is not less than 60 mm.

The invention also provides an implantation system of the flexible electrode, which comprises any implantation head and any implantation device of the flexible electrode.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

the implantation head comprises an implantation needle and a guide assembly, wherein a guide tube in the guide assembly is sleeved on the implantation needle, and the tail end of the guide tube, which is close to an implantation object, is a tip. In this manner, the implantation needle may be configured to be received within the guide tube without protruding from the tip, facilitating penetration of the implant object with the tip, when the flexible electrode is implanted. After puncturing the implant object, the implant needle moves relative to the guide tube, and implantation of the flexible electrode is continued. Therefore, the implantation needle does not need to puncture an implantation object, the straightness of the implantation needle can be ensured, the straightness of the subsequent implantation operation of the flexible electrode is ensured, the implantation needle can easily and smoothly implant the flexible electrode under the guidance of the guide tube, the stability of the movement of the implantation needle in the implantation process can be improved, and the shaking of the implantation needle is avoided.

In addition, by improving the straightness and the motion stability of the implantation needle, the deviation between the actual implantation point position of the flexible electrode and the preset implantation point position can be reduced, so that the accuracy and precision of the implantation of the flexible electrode are improved.

Drawings

FIG. 1 is a schematic view of an implant head according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the structure of the implant head in one state;

FIG. 4 is a schematic view of the structure of the implant head in another state;

FIG. 5 is a schematic view of a sliding portion according to an embodiment of the present invention;

FIG. 6 is a schematic view of a sliding portion in another view according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a mounting portion in an embodiment of the present invention;

FIG. 8 is a schematic view of a flexible electrode implant device according to an embodiment of the present invention;

FIG. 9 is a schematic view of a flexible electrode implantation system according to an embodiment of the present invention, in a view angle;

FIG. 10 is a cross-sectional view taken along the direction B-B of FIG. 9;

FIG. 11 is a schematic view of a flexible electrode implantation system according to an embodiment of the present invention at another view angle;

FIG. 12 is a schematic view of the implant system of the flexible electrode after assembly;

FIG. 13 is a bottom view of FIG. 12;

FIG. 14 is a cross-sectional view of FIG. 13 taken along the direction C-C;

reference numerals illustrate:

1-an implant head; 11-implantation needle; 111-part of the surface; 12-a guide assembly; 121-a guide tube; 1211-tip; 1212-incision; 1213-bevel; 1214-hollow structure; 122-sleeve assembly; 1221-a sleeve; 1222-mount; 12221-a first end of the mounting portion; 12222-a second end of the mounting portion; 12223-shaft hole; 1223-a receiving cavity; 123-a sliding part; 1231-a first end of the slider; 1232-a second end of the slider; 1233-implant needle mounting hole; 1234-receiving groove; 1235-end face; 13-a first mount; 131-mounting slots; 2-implantation means for a flexible electrode; 21-a driving mechanism; 211-a driving part; 212-a transmission assembly; 2121-a transmission; 21211-lead screw; 21212-a second slider; 21213-third slider; 21214-guide rail; 21215-screw base; 2122-first drive rod; 2123-a second drive rod; 213-a base; 2131-a first wall; 2132-a second wall; 2133-a third wall; 214-a limit part; 22-a transmission switching mechanism; 221-a first slider; 222-a first locking member; 223-a second locking member; 23-slide bar; 24-a second mount; 26-scale; 27-a connector; 28-a clamping part; 281-clamping split; 282-locking portion; 31-electrode plates; 32-flexible electrode sheet; 100-implantation system for flexible electrodes.

Detailed Description

As described above, in order to reduce damage to brain tissue of an implantation subject and to ensure a small deviation between an actual implantation point and a preset implantation point, linearity in the implantation process is required to be high. When the region where the flexible electrode is implanted is a deep brain, the implantation depth of the deep brain is generally greater than 3 cm, which has higher requirements on the movement stroke, stability, straightness and the like of the implanted device. The existing implantation devices can not meet the requirements of movement stroke, stability and straightness.

In order to solve the problems, the implantation head comprises an implantation needle and a guiding component, wherein a guiding pipe in the guiding component is sleeved on the implantation needle, and the tail end of the guiding pipe, which is close to an implantation object, is a tip. In this way, during the process of implanting the flexible electrode, the implantation needle can be configured to be accommodated in the guide tube, and does not protrude from the tip, so that the implantation object can be punctured by the tip. After puncturing the implant object, the implant needle moves relative to the guide tube, and implantation of the flexible electrode is continued. Therefore, the implantation needle does not need to puncture an implantation object, the straightness of the implantation needle can be ensured, the straightness of the subsequent implantation operation of the flexible electrode is ensured, the implantation needle can easily and smoothly implant the flexible electrode under the guidance of the guide tube, the stability of the movement of the implantation needle in the implantation process can be improved, and the shaking of the implantation needle is avoided.

In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.

The embodiment of the invention provides an implantation head which can be used for flexible electrode implantation. For example, can be used for brain electrode implantation.

FIG. 1 is a schematic view of an implant head according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; FIG. 3 is a schematic view of the structure of the implant head in one state; fig. 4 is a schematic view of the structure of the implant head in another state. The specific structure of the implant head will be described with reference to fig. 1 to 4.

In a specific implementation, the implant head 1 comprises: the implant needle 11 and the guide assembly 12. The implantation needle 11 is used to form a physical connection with the flexible electrode. Wherein the flexible electrode is not shown in the figure. The guiding component 12 is used for guiding the movement of the implantation needle 11, the guiding component 12 comprises a guiding tube 121 sleeved on the implantation needle 11, the tail end of the guiding tube 121 is a tip 1211, and the tail end of the guiding tube 121 is close to one end of the implantation object.

In some embodiments, the physical connection may include bonding, socket, or the like. For example, glue (e.g., hydrosol, etc.) may be used to adhere the flexible electrode to the implant needle 11. When the implantation of the flexible electrode is completed, the hydrosol is dissolved by encountering the tissue fluid, and the connection between the implantation needle 11 and the flexible electrode is released, so that the implantation needle 11 is retracted. For another example, one end of the flexible electrode is provided with an electrode ring or electrode wire hole, and the electrode ring or electrode wire hole is sleeved on the implantation needle 11. For another example, the physical connection between the flexible electrode and the implantation needle 11 may be achieved by combining multiple modes such as bonding and sleeving, so as to improve the connection reliability between the flexible electrode and the implantation needle 11.

As shown in fig. 4, the implant needle 11 may be configured to be received within the guide tube 121, in which case the implant needle 11 does not protrude beyond the tip 1211 of the guide tube 121. As shown in FIG. 3, with the flexible electrode implanted, the implantation needle 11 may be moved relative to the guide tube 121 and extended from within the guide tube 121 to continue the flexible electrode implantation.

In a typical application scenario, for example, to implant a flexible electrode into the cranium, it may be necessary to pierce the meninges during the actual implantation procedure, where the dura is the first dense connective tissue membrane inside the cranium, which is more flexible. With the implant head 1 provided by the invention, in the implantation process of the flexible electrode, the implant needle 11 is accommodated in the guide tube 121 and does not protrude out of the tip 1211, and the tip 1211 of the guide tube 121 is adopted to break the meninges, so that the implant needle 11 can be protected from bending deformation when the meninges are pierced. After the meninges are broken, the implantation needle 11 moves relative to the guide tube 121 to drive the flexible electrode to continue to complete the implantation of the flexible electrode, and the implantation needle 11 does not need to puncture the meninges, so that the straightness of the implantation needle 11 can be ensured, the straightness of the subsequent implantation operation of the flexible electrode can be ensured, and the implantation needle 11 can implant the flexible electrode into brain tissues below the meninges easily and smoothly under the guidance of the guide tube 121, so that the implantation stability and straightness are further improved.

It should be noted that the implantation head 1 is not limited to use for cranium implantation, but may be used for implantation of other tissues in other scenes, and is not exemplified here.

From the above, the implantation head 1 includes an implantation needle 11 and a guiding assembly 12, wherein a guiding tube 121 in the guiding assembly 12 is sleeved on the implantation needle 11, and a tip 1211 of the guiding tube 121 near the end of the implantation object. Thus, during implantation of the flexible electrode, the implantation needle 11 may be configured to be received within the guide tube 121 without protruding beyond the tip 1211, facilitating penetration of the implant object with the tip 1211. After puncturing the implant, the implantation needle 11 moves relative to the guide tube 121, continuing the implantation of the flexible electrode. Therefore, the implantation needle 11 does not need to puncture the implantation object, so that the straightness of the implantation needle 11 can be ensured, the straightness of the subsequent implantation operation of the flexible electrode is ensured, the implantation needle 11 can easily and smoothly perform the flexible electrode implantation under the guidance of the guide tube 121, the movement stability of the implantation needle 11 can be improved, and the shaking of the implantation needle 11 is avoided. By improving the straightness and the motion stability of the implantation needle 11, the deviation between the actual implantation point of the flexible electrode and the preset implantation point can be reduced, thereby improving the accuracy and precision of the implantation point of the flexible electrode.

In some embodiments, the distal end of the guide tube 121 near the tip 1211 has a notch 1212, the notch 1212 exposing a portion of the surface 111 of the implant needle 11. The implant needle 11 may be physically connected to the flexible electrode through a portion of the surface 111. In this way, during the implantation of the flexible electrode, the flexible electrode can be ensured to be exposed outside the guide tube 121, and the flexible electrode is protected from being damaged by the guide tube 121.

The extension direction of the notch 1212 may be parallel to the axial direction of the guide tube 121. In other words, guide tube 121 may be cut along the axial direction of guide tube 121 to form notch 1212. In this way, the guide tube 121 can be ensured to have a guiding function for the implantation needle 11, and the area of the partial surface 111 of the implantation needle 11 exposed through the notch 1212 can be ensured, so that the physical connection of the flexible electrode can be ensured.

In some embodiments, the tip 1211 includes a bevel 1213, the bevel 1213 having a bevel angle ranging from 20 degrees to 50 degrees.

The guide tube 121 has a hollow structure 1214. The hollow structure 1214 extends in the same direction as the axial direction of the guide tube 121 for defining the direction of movement of the implantation needle 11. The implant needle 11 is positioned within the hollow structure 1214 and is movable along the hollow structure 1214.

Wherein the inclined surface 1213 may be symmetrical with respect to the axial cross-section of the guide tube 121, and thus the inclined surface 1213 may include two sub-inclined surfaces symmetrical with respect to the axial cross-section of the guide tube 121, and the inclined surface 1213 may have a substantially C-shape. In this manner, a very fine tip 1211 may be formed at the end of the guide tube 121 to facilitate the guide tube 121 to easily pierce an implant object (e.g., meninges) in order to better maintain the straightness of the implantation operation.

FIG. 5 is a schematic view of a sliding portion according to an embodiment of the present invention; FIG. 6 is a schematic view of a sliding portion in another view according to an embodiment of the present invention; FIG. 8 is a schematic view of a flexible electrode implant device according to an embodiment of the present invention; fig. 9 is a schematic view of a flexible electrode implantation system according to an embodiment of the present invention, in a view angle. Referring to fig. 1 to 6, 8 and 9, the guide assembly 12 further includes: sleeve assembly 122 and slide 123. One end of the sleeve assembly 122 is connected with the guide tube 121, and the sleeve assembly 122 has a receiving cavity 1223. One end of the sliding portion 123 is connected to the implantation needle 11, the other end of the sliding portion 123 is connected to the driving mechanism 21, and the sliding portion 123 is driven by the driving mechanism 21 to move in the accommodating cavity 1223, so as to drive the implantation needle 11 to move.

The axial direction of the sleeve assembly 122, the extending direction of the receiving chamber 1223, and the axial direction of the guide tube 121 are parallel.

By guiding the movement direction of the sliding portion 123 by the sleeve assembly 122, the straightness of the implantation needle 11 during the implantation operation can be ensured, so as to help control the deviation between the actual implantation point and the preset implantation point, and reduce or even eliminate the deviation between the actual implantation point and the preset implantation point as much as possible.

In some embodiments, the sliding portion 123 is adapted to the accommodating cavity 1223, and the sliding portion 123 and the accommodating cavity 1223 are both cylindrical. The outer diameter of the sliding portion 123 is smaller than the inner diameter of the receiving cavity 1223, so that the sliding portion 123 can smoothly move within the receiving cavity 1223.

In a specific implementation, along a movement direction of the sliding portion 123 in the accommodating cavity 1223, the sliding portion 123 has a first end 1231 and a second end 1232 that are disposed opposite to each other. Wherein the first end 1231 of the sliding portion 123 is adjacent to the implantation needle 11.

The first end 1231 of the sliding part 123 is provided with an implantation needle mounting hole 1233 for connecting the implantation needle 11. The implant needle 11 is inserted into the implant needle mounting hole 1233 to achieve connection of the implant needle 11 with the sliding portion 123. The implantation needle 11 and the implantation needle mounting hole 1233 may be connected by an interference fit, so as to ensure the connection reliability of the implantation needle 11 and the sliding portion 123. It will be appreciated that the implant needle 11 and the implant needle mounting hole 1233 may be fixedly coupled in other ways, which are not illustrated herein.

When the flexible electrode implantation device illustrated in fig. 8 and 9 is used for the flexible electrode implantation, the second end 1232 of the sliding portion 123 is provided with a receiving groove 1234 for connecting with the driving mechanism 21.

In some embodiments, the first end 1231 of the sliding portion 123 has an end face 1235. The implantation needle mounting hole 1233 may be provided at the end face 1235. Meanwhile, the end surface 1235 may serve as the opposite side groove bottom of the receiving groove 1234. The accommodating groove 1234 is open to the driving mechanism 21.

Fig. 7 is a schematic structural view of a mounting portion in an embodiment of the present invention. Referring to fig. 1 to 7, in an implementation, the sleeve assembly 122 includes: sleeve 1221 and mount 1222. Wherein the accommodating cavity 1223 is disposed on the sleeve 1221. The attachment portion 1222 is connected to the guide tube 121 and the sleeve 1221, and is used to connect the guide tube 121 to the sleeve 1221.

In some embodiments, the mount 1222 includes a first end 12221 and a second end 12222. Wherein a first end 12221 of the mounting portion 1222 is adjacent the implant object and a second end 12222 of the mounting portion 1222 is adjacent the sleeve 1221. A second end 12222 of the mounting portion 1222 is positioned within the sleeve 1221. For example, the second end 12222 of the mounting portion 1222 is positioned within the sleeve 1221 and is in interference fit connection with the sleeve 1221.

In some non-limiting embodiments, the outer diameter of the first end 12221 of the mounting portion 1222 is the same as the outer diameter of the sleeve 1221 to ensure that the overall diameter of the sleeve assembly 122 is consistent. The outer diameter of the first end 12221 of the mounting portion 1222 may be smaller than the outer diameter of the sleeve 1221 and larger than the inner diameter of the sleeve 1221.

In particular implementations, the flexible electrode is integrated into a flexible electrode assembly that further includes a flexible electrode sheet 32 connected to the flexible electrode. The implant head 1 further comprises: a first mounting base 13 connected to the sleeve 1221, the first mounting base 13 being used for mounting the flexible electrode sheet.

In some embodiments, the first mount 13 may move along the axial direction of the sleeve 1221, and may also rotate about the circumference of the sleeve 1221. Because the requirements for the position of the flexible electrode sheet 32 are different in the flexible electrode implantation stage and after the implantation is completed, the position of the flexible electrode sheet 32 can be conveniently adjusted by adjusting the relative positions of the first mounting seat 13 and the sleeve 1221, so that the requirements for the position of the flexible electrode sheet 32 in different stages are met.

In some non-limiting embodiments, the first mounting base 13 is provided with a mounting hole, the axial direction of which is parallel to the axial direction of the sleeve 1221. The first mounting seat 13 is sleeved on the sleeve 1221 through a mounting hole.

For example, the inner diameter of the mounting hole may be smaller than the outer diameter of the sleeve 1221, and thus the first mount 13 may be interference fit to the sleeve 1221, and when the first mount 13 is rotated by an external force, the first mount 13 may be rotated around the circumference of the sleeve 1221. When an external force pushes the first mount 13 in the axial direction of the sleeve 1221, the first mount 13 is movable in the axial direction of the sleeve 1221.

As another example, the inner diameter of the mounting bore may be greater than the outer diameter of the sleeve 1221. The first mounting seat 13 is provided with a locking hole, after the first mounting seat 13 is sleeved on the sleeve 1221, a locking screw is adopted to penetrate through the locking hole so as to support the sleeve 1221, and locking of the first mounting seat 13 and the sleeve 1221 is achieved. When the first mounting seat 13 is locked with the sleeve 1221, the positions of the first mounting seat 13 and the sleeve 1221 are relatively fixed, so that the relative stability of the flexible electrode and the flexible electrode sheet 32 in the flexible electrode implantation operation can be ensured. When the relative position between the first mounting seat 13 and the sleeve 1221 needs to be adjusted, the locking screw can be withdrawn from the locking hole, so that the locking between the first mounting seat 13 and the sleeve 1221 is released, the first mounting seat 13 can be rotated or the first mounting seat 13 can be moved along the direction of the sleeve 1221, and after the first mounting seat 13 is moved to a proper position, the locking screw is adopted to lock the first mounting seat 13 and the sleeve 1221.

In some non-limiting embodiments, the first mount 13 is provided with a mounting slot 131. The flexible electrode sheet 32 is mounted in the mounting groove 131.

The implantation needle 11 in the above embodiment may be a tungsten needle or made of a material having rigidity or strength satisfying a set strength requirement. The end of the implantation needle 11 near the implantation object is a needle tip, and the structure of the implantation needle 11 illustrated in the drawing is only illustrative, and the specific structure of the implantation needle 11 is not limited.

The embodiment of the present invention further provides an implantation device for a flexible electrode, hereinafter simply referred to as an implantation device, which is used for driving any one of the implantation heads 1 to perform implantation of the flexible electrode. Specifically, the implant head 1 may be mounted on an implant device, and the implant device may drive the entire movement of the implant head 1 or may drive the movement of the implant needle 11. The following detailed description refers to the accompanying drawings.

FIG. 10 is a cross-sectional view taken along the direction B-B of FIG. 9; FIG. 11 is a schematic view of a flexible electrode implantation system according to an embodiment of the present invention at another view angle; FIG. 12 is a schematic view of the implant system of the flexible electrode after assembly; FIG. 13 is a bottom view of FIG. 12; fig. 14 is a cross-sectional view of fig. 13 taken along the direction C-C.

Referring to fig. 1 to 14, the implantation device 2 for a flexible electrode includes: a driving mechanism 21 and a transmission switching mechanism 22. The driving mechanism 21 includes: the device comprises a driving part 211 and a transmission assembly 212, wherein the driving part 211 is used for driving the transmission assembly 212 to linearly move. The transmission switching mechanism 22 is connected to the transmission assembly 212 and to the guide assembly 12 for connecting the implant head 1.

When the transmission switching mechanism 22 and the transmission assembly 212 are in the locking state, the transmission assembly 212 is in the first transmission state, and the transmission assembly 212 drives the implantation needle 11 and the guide tube 121 to move integrally toward the implantation subject. When the lock between the transmission switching mechanism 22 and the transmission assembly 212 is released, the transmission assembly 212 is in the second transmission state, and the transmission assembly 212 drives the implantation needle 11 to move relative to the guide tube 121 until the implantation stroke reaches the set stroke.

As can be seen from the above, the transmission switching mechanism 22 in the implant device 2 can be used to adjust the transmission state of the transmission assembly 212 to switch the transmission assembly 212 between the first transmission state and the second transmission state so that the implant device 2 can provide two propulsion modes. In the first transmission state, the transmission assembly 212 drives the implantation needle 11 and the guide tube 121 to integrally move toward the implantation object, thereby helping to complete the operation of puncturing the implantation object through the tip 1211 of the guide tube 121. Then, the transmission assembly 212 is switched to the second transmission state by the transmission switching mechanism 22, the transmission assembly 212 drives the implantation needle 11 to move relative to the guide tube 121, and the implantation needle 11 drives the flexible electrode to continue implantation. Thus, the implantation needle 11 does not need to puncture the implantation object, so that the straightness of the implantation needle 11 can be ensured, the straightness of the implantation needle 11 during the subsequent implantation operation of the flexible electrode is ensured, and the implantation needle 11 can easily and smoothly perform the flexible electrode implantation under the guidance of the guide tube 121, and has better implantation stability.

In a specific implementation, the driving mechanism 21 further includes a base 213, and the base 213 is used to mount the transmission assembly 212 and the transmission switching mechanism 22.

In particular implementations, the transmission assembly 212 may have a variety of configurations, as will be illustrated below.

In some embodiments, the transmission assembly 212 includes: the transmission 2121 and the first transmission rod 2122. The transmission portion 2121 is connected to the driving portion 211. A first transmission rod 2122 is connected to the transmission portion 2121 and to the guide assembly 12 via the transmission switching mechanism 22. At this time, by the mutual cooperation of the first transmission rod 2122 and the transmission switching mechanism 22, the switching of the connection state of the transmission switching mechanism 22 and the first transmission rod 2122 and the switching of the connection state of the transmission switching mechanism 22 and the base 213 are realized, and further, the switching of the transmission assembly 212 between the first transmission state and the second transmission state is realized.

Specifically, when the transmission assembly 212 is in the first transmission state, the transmission switching mechanism 22 is movable relative to the base 213, and the first transmission rod 2122 and the transmission switching mechanism 22 are in a locked state. Since the guide assembly 12 of the implantation head 1 is connected to the transmission switching mechanism 22, the first transmission rod 2122 and the transmission switching mechanism 22 are in a locking state, and the first transmission rod 2122 pushes the transmission switching mechanism 22 and the implantation head 1 as a whole to move relative to the base 213. At this time, the implant needle 11 may be accommodated in the guide tube 121, and the implant object, such as a meninges, is pierced through the tip 1211 of the guide tube 121.

When the transmission assembly 212 is in the second transmission state, the transmission switching mechanism 22 and the base 213 are in a locking state, the first transmission rod 2122 and the transmission switching mechanism 22 are unlocked, and the first transmission rod 2122 can slide relative to the transmission switching mechanism 22. After the first transmission rod 2122 is unlocked from the transmission switching mechanism 22, the first transmission rod 2122 moves along with the transmission portion 2121. Since the guiding component 12 of the implantation head 1 is connected to the transmission switching mechanism 22, and the transmission switching mechanism 22 is in a locking state with the base 213, and thus the guiding tube 121 is in a locking state with the base 213, the first transmission rod 2122 pushes the implantation needle 11 to move relative to the guiding tube 121, and the implantation needle 11 drives the flexible electrode to implant.

In other embodiments, the transmission assembly 212 includes: a transmission 2121, a first transmission bar 2122, and a second transmission bar 2123. The transmission portion 2121 is connected to the driving portion 211. A first transmission rod 2122 is connected to the transmission portion 2121 and to the guide assembly 12 via the transmission switching mechanism 22. The second transmission rod 2123 is connected to the transmission portion 2121 and the transmission switching mechanism 22, and an axial direction of the second transmission rod 2123 is parallel to an axial direction of the first transmission rod 2122 and is parallel to a linear motion direction of the transmission assembly 212.

When the transmission assembly 212 is in the first transmission state, the transmission switching mechanism 22 may move relative to the base 213, and the second transmission rod 2123 and the transmission switching mechanism 22 are in a locked state. Since the guide assembly 12 of the implant head 1 is connected to the transmission switching mechanism 22, the second transmission rod 2123 is connected to the transmission portion 2121, and can move along with the transmission portion 2121, when the second transmission rod 2123 and the transmission switching mechanism 22 are in a locking state, the second transmission rod 2123 pushes the transmission switching mechanism 22 to move relative to the base 213, at this time, no relative movement exists between the first transmission rod 2122 and the guide assembly 12, no relative movement exists between the first transmission rod 2122 and the implant needle 11, and the second transmission rod 2123, the transmission switching mechanism 22 and the implant head 1 are linked, so that the whole implant head 1 moves relative to the base 213. At this time, the implant needle 11 may be accommodated in the guide tube 121, and the implant object, such as a meninges, is pierced through the tip 1211 of the guide tube 121.

When the transmission assembly 212 is in the second transmission state, the transmission switching mechanism 22 and the base 213 are in a locked state, and the second transmission rod 2123 and the transmission switching mechanism 22 are unlocked and can slide relatively to the transmission switching mechanism 22. After the second transmission rod 2123 is unlocked from the transmission switching mechanism 22, both the first transmission rod 2122 and the second transmission rod 2123 move along with the transmission portion 2121. Since the guiding component 12 of the implantation head 1 is connected to the transmission switching mechanism 22, the transmission switching mechanism 22 is in a locking state with the base 213, and the guiding tube 121 is in a locking state with the base 213, the first transmission rod 2122 pushes the implantation needle 11 to move relative to the guiding tube 121, and the implantation needle 11 drives the flexible electrode to implant.

In some embodiments, the first and second transfer bars 2122, 2123 may be cylindrical or other suitable shape. The diameters of the first transmission rod 2122 and the second transmission rod 2123 may be the same or different, and the diameters may be controlled to be as small as possible under the condition of ensuring strength and rigidity requirements, so as to reduce the weight of the implantation device 2, and make the implantation device 2 as small as possible, so as to avoid shielding the field of view of the implantation operator. In particular implementations, the first drive rod 2122 is coupled to a slide 123 in the guide assembly 12. Specifically, the first transmission rod 2122 is connected to the accommodating groove 1234 of the sliding portion 123 in an interference fit manner. The first transmission rod 2122 pushes the sliding portion 123 to move in the accommodating cavity 1223, and the sliding portion 123 drives the implantation needle 11 to move.

In an implementation, the transmission switching mechanism 22 includes: a first slider 221, a first latch 222, and a second latch 223. The first slider 221 is connected to the base 213.

The first locking member 222 locks the second transmission rod 2123 to the first slider 221 when the transmission assembly 212 is in the first transmission state. In the second transmission state of the transmission assembly 212, the second transmission rod 2123 is unlocked from the first slider 221.

The second locking member 223 is configured to unlock the first slider 221 from the base 213 when the transmission assembly 212 is in the first transmission state, and to lock the first slider 221 from the base 213 when the transmission assembly 212 is in the second transmission state.

The flexible electrode implantation device 2 further comprises a connecting member 27 for connecting the first slider 221 to the base 213, wherein an axial direction of the connecting member 27 is parallel to a direction of the linear motion of the transmission assembly 212, and the first slider 221 moves along the axial direction of the connecting member 27 toward the implantation subject in the first transmission state of the transmission assembly 212.

The number of connectors 27 may be plural, such as two, three, or other more. The connection 27 may be a half-screw with a threaded portion for connection to the base 213. The first slider 221 is movable in the axial direction of the half-screw.

The first sliding block 221 is provided with a first locking hole matched with the first locking piece 222, the first locking piece 222 penetrates into the first locking hole and abuts against the second transmission rod 2123, and locking of the second transmission rod 2123 and the first sliding block 221 is achieved.

The first slider 221 is provided with a second locking hole adapted to the second locking piece 223, and the second locking piece 223 penetrates into the second locking hole to abut against the connecting piece 27, so as to realize locking of the first slider 221 and the base 213.

The first and second locking members 222 and 223 may be locking screws.

In some embodiments, the implant device 2 may further include a spring plunger that is sleeved on the connecting member 27, and the spring plunger is used to assist in locking the second locking member 223, so as to adjust the tightness of the first slider 221 when moving along the connecting member 27.

In some embodiments, the implant device 2 further comprises a clamping portion 28 provided to said first slider 221. The clamping portion 28 is used to clamp the sleeve 1221 in the guide assembly to connect the guide assembly to the first slider 221.

In some non-limiting embodiments, the clamping portion 28 includes a plurality of clamping lobes 281 and a locking portion 282, the plurality of clamping lobes 281 forming a clamping space, the locking portion 282 for tightening the plurality of clamping lobes 281 to clamp the sleeve 1221 within the clamping space. The number of the clamping resolution 281 may be two, three or more.

It should be noted that the clamping portion 28 may also have a threaded connection structure, a snap-fit structure, or other suitable structure, which is not illustrated.

In a specific implementation, the transmission portion 2121 includes: a screw 21211, a second slider 21212, a third slider 21213, and a guide rail 21214.

The screw 21211 is mounted on the base 213, and an axial direction of the screw 21211 is parallel to a linear movement direction of the transmission portion 2121.

The second slider 21212 is sleeved on the screw rod 21211, and the second slider 21212 is connected to the first transmission rod 2122 and the second transmission rod 2123.

The third slider 21213 is fixedly connected to the second slider 21212. The guide rail 21214 is fixedly connected to the base 213, the extending direction of the guide rail 21214 is parallel to the axial direction of the screw 21211, and the guide rail 21214 is adapted to the third slider 21213 and is used for guiding the moving direction of the third slider 21213. By the cooperation of the guide rail 21214 and the third slider 21213, and the connection of the second slider 21212 and the third slider 21213, the second slider 21212 can move along the direction guided by the guide rail 21214, so as to ensure the straightness of the movement of the second slider 21212 and further ensure the straightness of the implantation direction in the implantation process.

In some embodiments, the second slider 21212 may be provided with a connection bump, and the first transmission rod 2122 and the second transmission rod 2123 are connected to the second slider 21212 through the connection bump, so that the volume and weight of the second slider 21212 can be reduced as much as possible, which is helpful for realizing the compact design of the implantation device 2.

Further, the transmission portion 2121 may further include a screw mount 21215. The screw 21211 is connected to the base 213 via a screw mount 21215.

In some embodiments, the base 213 may include a first wall 2131, a second wall 2132, and a third wall 2133. Wherein the extending direction of the first wall 2131 is parallel to the axial direction of the first transmission rod 2122. The second wall 2132 is disposed parallel to and opposite to the third wall 2133, and is located at both ends of the first wall 2131 along the extending direction of the first wall 2131.

The rail 21214 can be provided to the first wall 2131. The transmission switching mechanism 22 may be provided to the second wall 2132. The driving part 211 may be provided to the third wall 2133.

It should be noted that the base 213 may have other suitable structural patterns, which are not limited herein.

Further, the base 213 may be provided with a stopper 214. The limiting portion 214 is configured to define a movement position of the second slider 21212, and may also assist in determining an initial position of the second slider 21212.

In a specific implementation, the driving part 211 includes a driving knob or a driving motor for driving the screw 21211 to rotate. The screw 21211 and the second slider 21212 may be screw-coupled. When the driving knob is rotated, the screw 21211 can be driven to rotate around the axial direction, the second slider 21212 is sleeved on the screw 21211 and is in threaded connection, and the second slider 21212 is fixedly connected with the third slider 21213, so that the rotation of the screw 21211 can be converted into linear motion of the second slider 21212. Two different pushing modes (corresponding to two transmission states respectively) of the implantation device 2 can be realized by adopting one driving part 211, so that the whole structure and the use complexity are greatly simplified, the structure is miniaturized, and the shielding of the visual field of an operator in the implantation process is avoided.

In some embodiments, the base 213 may be provided with a graduation mark 26, and the second slider 21212 is provided with a graduation mark adapted to the graduation mark 26, and the graduation mark cooperates with the graduation mark 26 to precisely display the moving distance of the second slider 21212. The accuracy with respect to the scale 26 may be configured according to actual requirements. For example, to the nearest 1 mm or 0.5 mm, etc.

In some non-limiting embodiments, the implantation stroke of the implant device 2 is not less than 10 millimeters.

Further, the implantation stroke of the implantation device 2 is not less than 60 mm.

In a specific implementation, the flexible electrode is integrated in a flexible electrode assembly, and the implant device 2 further comprises: the slide bar 23 and the second mount 24. The slide bar 23 is connected to the base 213. The second mounting seat 24 is slidably connected to the sliding rod 23, the second mounting seat 24 is used for mounting an electrode plate 31, and the electrode plate 31 is connected with the flexible electrode and is used for receiving signals collected by the flexible electrode. The signal may be an electroencephalogram signal.

The axial direction of the slide bar 23 is parallel to the direction of linear motion of the transmission assembly 212. During implantation, the second mount 24 may move along the slide bar 23. For example, the flexible electrode assembly further includes a flexible electrode plate 32, where the flexible electrode plate 32 is connected to the electrode plate 31 and drives the electrode plate 31 to further drive the second mounting seat 24 to move relative to the slide rod 23.

In some variant embodiments, the implant device 2 may further comprise: a second mount 24. The second mount 24 may be slidably coupled to either the first drive rod 2122 or the second drive rod 2123.

With reference to fig. 1 to 14, the present invention also provides a flexible electrode implantation system 100, the flexible electrode implantation system 100 comprising any one of the implantation heads 1 described above and any one of the flexible electrode implantation devices 2 described above.

The specific structure and operation principle of the implantation head 1 and the implantation device 2 of the flexible electrode can be referred to the description of the above embodiments, and will not be repeated here.

In order to facilitate a better understanding and implementation of the embodiments of the present invention by those skilled in the art, the assembly of the flexible electrode implant device 2 and the workflow during the implantation operation will be described below in connection with a typical application scenario. In this scenario, the implantation of a flexible electrode into the cranium is illustrated as an example.

The assembly process of the implant head 1 is as follows: the guide tube 121 is inserted into the shaft bore 12223 of the mounting portion 1222 and the second end 12222 of the mounting portion 1222 is inserted into the sleeve 1221. The implantation needle 11 is inserted into the hollow structure 1214 of the guide tube 121, and inserted into the implantation needle mounting hole 1233 of the sliding part 123 after passing through the accommodation cavity 1223 of the sleeve 1221. The sliding portion 123 is partially inserted into the sleeve 1221 and exposed to a portion, for example, about 5 mm. A ring of adhesive tape is adhered to the exposed portion of the sliding portion 123, and the adhered ring of adhesive tape can provide a certain resistance to facilitate the first transmission rod 2122 to be plugged into the accommodating groove 1234 when the first transmission rod 2122 is subsequently docked. The first mounting seat 13 is sleeved on the sleeve 1221, an elastic plunger is sleeved on the locking screw, the locking screw penetrates through the locking hole, the elastic plunger can adjust the tightness of the locking screw propped against the sleeve 1221, and further the tightness of the first mounting seat 13 rotating and sliding on the sleeve 1221 can be adjusted.

The flexible electrode sheet 32 is mounted to the first mount 13. For example, the flexible electrode sheet 32 may be adhered to the first mount 13 using double-sided adhesive tape.

The flexible electrode sheet 32 also has one or more extremely thin flexible wires (not shown) at its distal end, which have an electrode ring that is threaded onto the implant needle 11, thus completing the assembly of the entire implant head 1.

The first latch 222, the second latch 223, and the latch 282 are released. The first slider 221 is pushed to the initial position, locking the second locker 223. The operating knob slides the second slide 21212 and the third slide 21213 to a starting scale, such as a zero scale.

After the sleeve 1221 is inserted into the clamping space formed by the clamping split 281, the locking part 282 is screwed down, and then the driving knob is operated to move the second slide 21212 and the third slide 21213 along the implantation direction, a certain damping force is felt along with the movement (for example, about 2mm of the movement) of the second slide 21212 and the third slide 21213, at this time, the first transmission rod 2122 just touches the accommodating groove 1234, and the sliding part 123 is prevented from entering the accommodating cavity 1223 by the adhesive tape adhered to the exposed part of the sliding part 123, so that if the screwing is continued, the first transmission rod 2122 is inserted into the accommodating groove 1234, thereby completing the abutting joint of the first transmission rod 2122 and the sliding part 123.

When the damping force of the driving knob screwing in is found to be not present, it is indicated that the abutting of the first transmission rod 2122 with the sliding portion 123 is completed, and at this time, implantation of the flexible electrode can be started.

The implantation device 2 is fixed on a positioner or a mechanical arm, and the relative position of the implantation head 1 and the brain meter is adjusted through a height adjusting knob or a position adjusting knob. Such as having the tip 1221 of the guide tube 121 of the implant device 2 at a distance of about 3mm above the brain surface.

The first locking member 222 is locked and the second locking member 223 is released. At this time, the first locking member 222 locks and fixes the second transmission rod 2123 and the first slider 221 together, so that when the driving knob is screwed in, the second transmission rod 2123 moves together with the first slider 221, and the first slider 221 moves with the implantation needle 11 and the guide assembly 12 again until the tip 1211 of the guide tube 121 in the guide assembly 12 pierces the brain surface, thereby completing the rupture.

After the membrane rupture is completed, the first locking piece 222 is released and the second locking piece 223 is locked, at this time, the first slider 221 is locked with the base 213, and the second transmission rod 2123 is unlocked with the first slider 221. The drive knob is then continued to be screwed in, at which point the first slider 221 will no longer move with the second transmission rod 2123, but only the first transmission rod 2122 will move against the sliding portion 123, at which point the implantation needle 11 will be implanted with the flexible electrode into the brain.

During the implantation of the flexible electrode, the implantation depth can be read out through the scales on the transmission base 213 and the driving knob, the reading accuracy can be, for example, 0.01mm (used in combination with the 100-grid scale arranged on the driving knob), and the implantation is completed when the predetermined implantation depth is reached.

After implantation, the driving knob is operated to withdraw the implantation needle 11, after the implantation needle 11 is completely withdrawn, the positioning instrument or the mechanical arm is operated to enable the implantation device 2 to be far away from the brain meter, the degree of the distance is determined according to the distance between the installation fixing position of the flexible electrode slice and the brain meter, then the first installation seat 13 is manually operated to vertically and rotationally fix the electrode slice fixing plate, and finally the electrode slice fixing plate and the first installation seat 13 are fixed together through the photo-curing glue. The electrode sheet fixing plate is used for carrying the flexible electrode sheet 32.

Thus, the implantation of the flexible electrode is completed once, and the steps are repeated when the next flexible electrode is implanted.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims

1. An implant head, comprising:

an implantation needle for forming a physical connection with the flexible electrode;

the guiding component is used for guiding the movement of the implantation needle and comprises a guiding tube sleeved on the implantation needle, the tail end of the guiding tube is a tip, and the tail end of the guiding tube is close to one end of the implantation object.

2. The implant head of claim 1, wherein a region of the distal end of the guide tube proximate the tip has a cutout that exposes a portion of the surface of the implant needle.

3. The implant head of claim 1, wherein the tip includes a bevel having a bevel angle ranging from 20 degrees to 50 degrees.

4. The implant head of claim 1, wherein the guide assembly further comprises:

the sleeve assembly is connected with the guide pipe at one end and is provided with an accommodating cavity;

and one end of the sliding part is connected with the implantation needle, the other end of the sliding part is used for being connected with a driving mechanism, and the sliding part moves in the accommodating cavity under the driving of the driving mechanism so as to drive the implantation needle to move.

5. The head of claim 4, wherein the sliding portion has a first end and a second end disposed opposite each other along a direction of movement of the sliding portion within the receiving cavity, the first end being provided with an implant needle mounting hole for coupling to the implant needle, the second end being provided with a receiving recess for coupling to the driving mechanism, wherein the first end is adjacent to the implant needle.

6. The implant head of claim 4, wherein the sleeve assembly comprises:

the accommodating cavity is arranged on the sleeve;

and the mounting part is connected with the guide pipe and the sleeve and used for connecting the guide pipe with the sleeve.

7. The implant head of claim 6, wherein the flexible electrode is integrated into a flexible electrode assembly, the flexible electrode assembly further comprising a flexible electrode sheet connected to the flexible electrode, the implant head further comprising: the first mounting seat is connected to the sleeve and used for mounting the flexible electrode slice.

8. A flexible electrode implantation device for driving the implantation head according to any one of claims 1 to 7 to perform flexible electrode implantation, the flexible electrode implantation device comprising:

A drive mechanism, comprising: the driving part is used for driving the transmission assembly to linearly move;

the transmission switching mechanism is connected with the transmission assembly and is used for connecting the guide assembly of the implantation head;

when the transmission switching mechanism and the transmission assembly are in a locking state, the transmission assembly is in a first transmission state, and the transmission assembly drives the implantation needle and the guide tube to integrally move towards an implantation object; when the locking between the transmission switching mechanism and the transmission assembly is released, the transmission assembly is in a second transmission state, and the transmission assembly drives the implantation needle to move relative to the guide tube until the implantation stroke reaches a set stroke.

9. The flexible electrode implant device of claim 8, wherein the drive mechanism further comprises a base for mounting the drive assembly and the drive switching mechanism.

10. The flexible electrode implant device of claim 9, wherein the transmission assembly comprises:

the transmission part is connected with the driving part;

the first transmission rod is connected with the transmission part and is connected with the guide assembly through the transmission switching mechanism;

When the transmission assembly is in the first transmission state, the transmission switching mechanism can move relative to the base, and a locking state is formed between the first transmission rod and the transmission switching mechanism; when the transmission assembly is in the second transmission state, the transmission switching mechanism and the base are in a locking state, and the first transmission rod and the transmission switching mechanism are unlocked and can slide relatively to the transmission switching mechanism.

11. The flexible electrode implant device of claim 9, wherein the transmission assembly comprises:

the transmission part is connected with the driving part;

the second transmission rod is connected with the transmission part and the transmission switching mechanism, and the axial direction of the second transmission rod is parallel to the axial direction of the first transmission rod and parallel to the linear motion direction of the transmission assembly;

when the transmission assembly is in the first transmission state, the transmission switching mechanism can move relative to the base, and the second transmission rod and the transmission switching mechanism are in a locking state; when the transmission assembly is in the second transmission state, the transmission switching mechanism and the base are in a locking state, and the second transmission rod and the transmission switching mechanism are unlocked and can slide relative to the transmission switching mechanism.

12. The flexible electrode implant device of claim 11, wherein the drive switching mechanism comprises:

the first sliding block is connected to the base;

the first locking piece locks the second transmission rod and the first sliding block when the transmission assembly is in the first transmission state, and unlocks the second transmission rod and the first sliding block when the transmission assembly is in the second transmission state;

the second locking piece is used for unlocking the first sliding block and the base when the transmission assembly is in the first transmission state, and locking the first sliding block and the base when the transmission assembly is in the second transmission state.

13. The flexible electrode implant device of claim 12, further comprising a connector for connecting the first slider to the base, the connector having an axial direction parallel to a direction of linear movement of the transmission assembly, the first slider moving toward the implant object along the axial direction of the connector in the first transmission state of the transmission assembly.

14. The flexible electrode implant device of claim 12, further comprising: the clamping part is arranged on the first sliding block and used for clamping the sleeve in the guide assembly so as to connect the guide assembly with the first sliding block.

15. The flexible electrode implant device of claim 14, wherein the clamping portion includes a plurality of clamping segments forming a clamping space and a locking portion for tightening the plurality of clamping segments to clamp the sleeve within the clamping space.

16. The flexible electrode implant device of claim 11, wherein the transmission portion comprises: the screw rod is arranged on the base, and the axial direction of the screw rod is parallel to the linear motion direction of the transmission part;

the second sliding block is sleeved on the screw rod and connected with the first transmission rod and the second transmission rod;

the third sliding block is fixedly connected with the second sliding block;

the guide rail is fixedly connected to the base, the extending direction of the guide rail is parallel to the axial direction of the screw rod, is matched with the third sliding block and is used for guiding the movement direction of the third sliding block.

17. The flexible electrode implantation device according to claim 16, wherein said driving part comprises a driving knob or a driving motor for driving said screw to rotate.

18. The flexible electrode implant device of claim 9, wherein the flexible electrode is integrated into a flexible electrode assembly, the implant device further comprising:

The sliding rod is connected to the base;

the second mounting seat is connected with the sliding rod in a sliding mode and used for mounting an electrode plate, and the electrode plate is connected with the flexible electrode assembly and used for receiving signals collected by the flexible electrode assembly.

19. The flexible electrode implant device of claim 8, wherein the flexible electrode implant device has an implant depth of not less than 60 millimeters.

20. A flexible electrode implantation system comprising an implantation head according to any one of claims 1 to 7 and a flexible electrode implantation device according to any one of claims 8 to 19.